单词 | mid-feather |
释义 | mid-feathern. 1. A thin structure dividing or partitioning the interior of a furnace, flue, etc. (see quots.). Also (Joinery): = cross-tongue n. ΘΚΠ society > occupation and work > equipment > furnace or kiln > furnace > parts of furnace > [noun] > other parts of furnaces sump1673 stoking-hole1683 stoking-place1744 mid-feather1748 bottoming hole1815 trunnel-head1819 keystone1821 vault1825 well1825 nose-hole1832 fore-stone1839 nose1839 tongs-carriage1839 tunnel-head1843 glory-hole1849 1748 W. Brownrigg Art of making Common Salt ii. ii. 51 The body of the furnace consists of two chambers divided from each other by a brick partition called the mid-feather. 1797 Encycl. Brit. XVI. 626/1 The body of the furnace consists of two chambers, divided from each other by a brick partition called the mid-feather. 1875 E. H. Knight Amer. Mech. Dict. II. 1437/2 Mid-feather, a water-bridge in a steam-boiler furnace which occupies a middle position in the flue-space, the flame passing both above and below it. ?1905 G. F. Goodchild & C. F. Tweney Technol. & Sci. Dict. 402/1 Midfeather (Paper Manufac.), a partition fixed in the ‘breaker’ to promote circulation of the pulp. 1930 Engineering 22 Aug. 223/1 Numerous tests showed that, provided the midfeather was inserted at the fan end of the duct, completely uniform distribution of the dust was obtained. 1940 Chambers's Techn. Dict. 547/1 Mid-feather (Join.), a cross-tongue. 1974 P. Wright Lang. Brit. Industry xv. 150 The mid-feather is the brickwork dividing between the two flues. ΚΠ 1898 Webster's Internat. Dict. Eng. Lang. Midfeather,..2. (Mining) A support for the center of a tunnel. This entry has been updated (OED Third Edition, March 2002; most recently modified version published online March 2022). < n.1748 |
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